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Carzen

Moorpark, CA

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Question Asked: 

MY 1995 chevy lumina-sedan intermittenly shows ABS AMBER light on, after start up and first forward motion, with shorten brake cylinder motor self-test. But sometime okay! There is a port for the ABS scanner, like that of ECM, but what type of ABS scanner to use? thank you!


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Question Asked: 

My GM 3.1L V6 has 4T60E auto transmission, which got about 85K miles on it. It has 1-2 band applied during overdrive range 1st gear, what does this 1-2 band do for 1st gear? Note: 3-4 gear, no band applied. Thanks!


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Question Asked: 

My GM Chevy Lumina-sedan 3.1L V6 has 4T60E auto transmission with a number of its solenoids. What is the TCC PWM SOLENOID? Is it different from the shift solenoid A&B? and the transaxle converter clutch solenoid/relay? what should be their ohm resistances' values, from using digital volt. meter? Thank you for your advice!


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Question Asked: 

AFTER DRIVEN HOME (15-20 MILES)FINE AND 2-HOUR BREAK, MY Lumina-sedan 3.1L V6 AUTO TRANSMISSION, 4T60-E, WOULD NOT ENGAGE/RUN IN DRIVE AND OVERDRIVE POSITIONS, BUT RUN IN REVERSE, 1&2 (FORWARD) POSITIONS! THE TRAN. FLUID HAS BEEN RECENTLY REPLACED, AT OK LEVEL, AND IN GOOD CONDITION (REDDISH COLOR). THE NEUTRAL SAFETY/START SWITCH ON TRANSMISSION BODY, HAS BEEN INTERMITTENLY MALFUNCTIONING, SO IT IS BY PASSED FOR THE ENGINE IGNITION. YOUR ADVICE WILL BE APPRECIATED1, THANKS.


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Question Asked: 

Recently while idleing at stop after travelling for some distances, my 3.1L V6 Chevy engine stumbled or stalled, but did not quit or die. There was also metallic clicking noises during stalling! The engine OBD I scanner showed trouble codes 37 (TCC brake switch stuck "ON") and 82 (3X crankshaft position sensor signal error). Since the clicking noise sounded like EGR's solenoid clicking, and engine stumbled or stalled, can any of these codes cause the EGR's solinoid clicking and intermitten opened? Thanks for your advice!


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Question Asked: 

My chevy 3.1L V6 95 engine recently has high-idle RPM ( about 1500), which last unusually long time, after the engine got first started in the morning after an over-night park. After that, the idling RPM seems fine. Prior to this, the first start-up idle RPM sometimes fast settled to normal RPM, but sometimes slower. The IAC valve's terminal resistances has been checked okay according to a specification. And the morning temperature has not varied much! Your feedback is appreciated!


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Question Asked: 

My chevy lumina 95 3.1L V6 has its alternator's charging output varies between 13V. to 14V. during a day of normal driving. Is it okay or not? Note: The alternator's cables are all checked fine. Thank you in advance!


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Question Asked: 

MY 1995 LUMINA-SEDAN 3.1l v6 engine at idling, recently starts to intermittenly stall with metalic clicking noise from the front of the engine around power steering pump, water pump or so. I have not been able to pinpoint it yet. The noise sounds almost like solenoid clicking, but louder. After the noise stops, the engine's RPM slightly moves up (like when the A/C compressor turn off). No error codes show up from OBD scanning. Also, this may be related: while driving at constant steady accelerator about 2000RPM, the engine RPM intermittenly surged and dropped, out of control. The water pump is about 8 month new, but the power steering pump has about 130K miles or more, of usage; and the engine is rebuilt with about 8 month of driving. Thank you for your assistance in advance!


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Question Answered: 

I think it is IAC (idle air control valve). It locates near the air throttle body. removing two bolts and the IAC can be taken out to check or replace. Also check if the air channel is clogged. good luck


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Question Asked: 

My Chevy lumina-sedan 3.1L V6, 1995's ECU module shows the 3X Crankshaft position sensor's signal error. The sensor was removed and has been reinstalled. Does it require retraining the ECU? what is the right sensor voltage from cranking the engine in order to diagnose this sensor? If need to replace, what is the best way to reach it? it locates on the back side of the engine block near firewall! Thanks in advance.


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